Unusual Performance for the Selective Oxidation of Ethane to Acrolein over Mesoporous SBA-15-supported Potassium Catalysts

摘要

SBA-15 silica-supported potassium catalysts were first reported for the selective oxidation of ethane to aldehydes by using oxygen as oxidant.It was found that SBA-15-supported potassium catalysts exhibited very high yield of aldehydes,especially surprisingly high yield of acrolein in the selective oxidation of ethane.The SBA-15-supported catalyst with 2% loading of potassium showed the best performance for the partial oxidation of ethane to aldehydes.The highest yields of acrolein and total aldehydes (formaldehyde,acetaldehyde,and acrolein) were 2.5% and 5.2%,respectively,when the ethane conversion was 14.8% at the reaction temperature of 748 K.